TY  - RPRT
TI  - Measured sections of Ordovician strata in Indiana and Ohio
AU  - Gordon Whitney Weir
AU  - Warren Lee Peterson
AU  - W. C. Swadley
PY  - 1980
DO  - 10.3133/ofr80235
UR  - https://pubs.usgs.gov/publication/ofr80235
ID  - ofr80235
ER  -